Fundraising Fox

Tecogen

NYSE: TGEN

Waltham, US · Delaware corporation · 1 known investors

Advanced Manufacturing

Founders & leadership

BM
Benjamin M. LockeCo-CEO
JN
John N. HatsopoulosCo-CEO and director
RA
Robert A. PanoraCOO and President
DA
David A. GarrisonCFO, treasurer, and secretary

Board

CT
Charles T. MaxwellBoard director
JE
Joseph E. AounBoard director
EL
Earl LewisBoard director
AM
Angelina M. GalitevaChairperson
AF
Ahmed F. GhoniemBoard director

Investors · 1

Wonder VenturesLos Angeles · $100K – $1.5M

Funding

SEC filings, press & company announcements

$9M disclosed across 3 of 6 rounds · 2015–2025

  • Undisclosed amountpublic offeringJul 2025
    Source ↗
▶Undisclosed amountofferedMay 2016 · 14 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Ahmed F. GhoniemDirector
  • David GarrisonExecutive Officer
  • Robert A PanoraExecutive Officer
  • Joseph E AounDirector
  • Angelina M GalitevaDirector
  • Earl R LewisDirector
  • Charles T MaxwellDirector
  • John N HatsopoulosExecutive Officer, Director
  • Benjamin M LockeExecutive Officer
First sale
Apr 2016
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$3MraisedJan 2016 · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Earl R LewisDirector
  • John N HatsopoulosExecutive Officer, Director
  • Benjamin M LockeExecutive Officer
  • David GarrisonExecutive Officer
  • Angelina M GalitevaDirector
  • Joseph E AounDirector
  • Robert A PanoraExecutive Officer
  • Charles T MaxwellDirector
Offering amount
$3M
Amount sold
$3M
First sale
Dec 2015
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$5MraisedAug 2015 · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Joseph E AounDirector
  • John N HatsopoulosExecutive Officer, Director
  • Earl R LewisDirector
  • Charles T MaxwellDirector
  • David GarrisonExecutive Officer
  • Angelina M GalitevaDirector
  • Robert A PanoraExecutive Officer
  • Benjamin M LockeExecutive Officer
Offering amount
$5M
Amount sold
$5M
First sale
Aug 2015
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$1MraisedFeb 2015 · 1 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Benjamin M. LockeExecutive Officer
  • John N. HatsopoulosExecutive Officer, Director
  • Charles T. MaxwellDirector
  • Joseph E. AounDirector
  • Robert A. PanoraExecutive Officer
  • Earl LewisDirector
  • David A. GarrisonExecutive Officer
  • Angelina M. GalitevaDirector
  • Ahmed F. GhoniemDirector
Offering amount
$1M
Amount sold
$1M
First sale
Jan 2015
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

In the news

Tecogen Raises $18.2 Million to Boost Operations - TipRanks.comtipranks.com · Aug 2025Tecogen Raises $19.9M in Public Offering: Clean Energy Firm Eyes Major Data Center Market Entrystocktitan.net · Jul 2025

Frequently asked questions

Who are Tecogen's investors?
Tecogen's investors include Wonder Ventures.
How much funding has Tecogen raised?
Tecogen has disclosed $9M raised across 3 of its 6 known rounds.
Where is Tecogen headquartered?
Tecogen is headquartered in Waltham, US.